#![forbid(unsafe_code)]

#[macro_use]
extern crate clap;
extern crate tera;

use clap::{App, AppSettings, Arg};
use std::error::Error;
use tera::{Context, Tera};

fn main() -> Result<(), Box<Error>> {
    let tera = Tera::new("templates/**/*")?;

    let output_opts = &["all", "latex", "html"];

    let matches = App::new("panres")
        .version(crate_version!())
        .author(crate_authors!())
        .about("Universal resume formatter")
        .arg(
            Arg::with_name("output-format")
                .help("Specifies which output format you want")
                .possible_values(output_opts)
                .multiple(true),
        )
        .settings(&[AppSettings::ArgRequiredElseHelp])
        .get_matches();

    let outputs = matches.values_of("output-format").unwrap();

    if outputs.clone().any(|e| e == "all") {
        for output in output_opts {
            generate_outputs(&tera, output)?;
        }
    } else {
        for output in outputs {
            generate_outputs(&tera, &output)?;
        }
    }

    Ok(())
}

fn generate_outputs(template_engine: &Tera, output_format: &str) -> Result<(), Box<Error>> {
    println!("{}", template_engine.render(output_format, Context::new())?);
    Ok(())
}